Dust-collector.



V\/.1. SCHMITT.

DUST COLLECTOR.

APPLICATIONHLED AuG.3.1917.

Patented Feb. Q5, 1919.

WILL J'. SCHMITT, 0F CLEVELAND, OHIO.

DUST-COLLECTOR.

Speciication of Letters Patent.

Fatented Feb. 25, Mig.

Application filed August 3, 1917. Serial No. 184,273.

To all whom t may concern.' l

Be it known that I, WILLIAM J. SCHMITT, a citizen of the United States,and resident of Cleveland, in the county of Cuyahoga and State of Ohio,haveinvented certain new and useful Improvements in Dust-Collectors, ofwhich I hereby declare the following to be a full. clear, and exactdescript1on, such as will enable others skilled 1n the art to which itappertains to make and use the same.

The objects of the invention are to provide a simple and efficient andpractical form of dust collector, particularly arranged to prevent theentrance of dust with fresh air delivered to a room or building. Theinvention is also designed to provide means for readily removing thedust collecting screens from the collector, and to so arrange thesupportingand vibrating means for the screens that t e said screens canbe each selectively withdrawn from the casing of collector withoutinterfering with the position of other screens or inlet pipes or ofvibratingv apparatus. The exhaust openings in the several screens andcasings are also so arranged as to approximate closely incross-sectional area the total area of or admission openings in thecloth composing the screens, so as to permit an unobstructed current ofair therethrough.

The invention includes the Specific forms of structure 0f collectingscreens and casing therefor and the various features of improved andnovel structure hereinafter described, shown in the accompanying drawandspecifically pointed out in claims. v In the accompanying drawingsFigure 1 is a vertical section of the device; Fig. 2 is a verticalelevation of the exhaust side of the casing showing the large exhaustopenings in the several screens; Fig. 3 is an end elevation of onescreen; Fig. 4 is a plan of one of the vibrating hammers.

In these views A is a frame forming a chamber having a door or removablewall B at one end and an inlet opening C.

Inthe end opposite the door are formed a series of vertical unobstructedopenings A.

A discharge chute E communicates with the bottom of the frame and isprovided with a valve F through which dust is discharged. p

G G are the dust collecting screens which include frames covered withscreen material upon the outer surface of which the dust collects and bymeans of which it is prevented from entering the air discharge pipe Hleading from the separate air chamber I into which the air is drawn fromthe screens Eby means of a blower not shown or any other convenientvacuum creating means.

Each dust collecting frame is provided with an unobstructed opening Gwhich registers accurately with one of the openings A in the casing A,and which must equal in cross sectional area the area of the intersticesthrough which the air enters the cloth screens.

rIhe frames vGr G are attached rigidly and closely to the rear wall ofthe casing to form air tight joints therewith by means of bolts J Jwhich pass through clamping plates K K transversely placed across theopening.

Opposite the frames in the casing is placed a door B by means of whichcach frame separately can be removed for subv stitution or repair and adoor M in the air chamber permits access to the bolts J J when it isdesired to attach or remove the frame.

.The forward end of each frame is-supported on a spring N which permitsthe frame to be vibrated to shake oil'l the dust accumulated thereonwhen it becomes heavy enough to clog the screen.

This vibratlon is accomplished by means of aset of hammers `O, only onebeing shown for illustrated purposes, operated by means of cams P whichdrop them upon the upper edges of the frame. A common rotatin shaft Qoperates all the cams. Each screen ame is rectangular at the upper endand formed tapering at the lower end so that the dust will be readilydischarged therefrom.

Having described the invention what I claim as new and desire to secureby Letters Patent is, 1

1. The combination with a casing havingV an inlet opening 1n one Walland a series of elongated outlet openings in its rear kwall and having alarge opening in its. front. wall, of an outlet chamber mounted uponsaid casing over said outlet openings, a series of hollow screen frameswithin said chamber having corresponding elongated openings registeringwith the outlet openings in said casing, said frames rigidly and closelyconnected to said casing, a resilient support for the end Aof eachscreen opposite its Voutlet opening means for independently vibratingeach screen, said vibrating means located above said opening in saidfront wall opening in a dust collector employing screens.

2. In combination with a closed casing having an opening in its frontwall, and a door for closing the same and also provided with a series ofoutlet openings in its rear wall, said outlet openings being verticallyarranged and spaced apart and of elongated shape, an outlet chambersecured to the rear wall of said casing over' said outlet openings, aseries of hollow screens positioned in said chamber, each screenprovided with an elongated outlet opening in its rear wall registeringwith one of the outlet openings in said rear Wall of the casing, eachoutlet opening aggregating in area the areas of the openings in thecorresponding screen surfaces, means for detachably securing each screento said rear wall, each screen tapering at its lower end to permit thedischarge of dust therefrom, and a vibrating means positioned above saidopening in said front wall, said casing provided withan inlet openingand with' a discharge opening in its bottom underneath said screen.

3. In a dust collector in combination, a chamber having front and rearwalls, said front wall having a large opening therethrough, a hollowscreen therein secured at one end to said rear chamber wall, said rearchamber wall and screen having communicating openings, the end of saidscreen opposite its said lopening being free to vibrate vertically, acam and shaft therefor mounted upon one of said walls above the level ofthe opening in said front wall and a weight operated by said cam toengage said screen.

4. In a dust collector in combination, a chamber having front, rear andside walls, said front wall having a large opening, 'a closure for saidopenings in said front wall, a hollow screen therein secured at one endto said rear chamber wall, said rear chamber wall and screen havingcommunicating openings, the end of said screen opposite said openingsbeing free to vibrate vertically, means for vibrating the said free endof the said screen, said vibrating means being located above saidopening in said front wall to permit the withdrawal of said screentherethrough.

5. In a dust'collector in combination, a chamber having an inlet openingand spaced outlet openings in its wall, a series of hollow screensrigidly secured at one end of the said chamber over said outletopenings, said screens having each an outlet opening registering with anoutlet openin in said chamber wall, resilient supports for the oppositeends of the said screens, a front wall for said chamber provided with anopening through which said screens can be individually withdrawn,vibrating devices for said screens located above said opening in saidfront wall to permit said screens to be withdrawn` and a removableclosure for said opening.

In testimony whereof, I hereunto set my hand this 28th day' of July,1917.

WILLIAM J. SCHMITT. In presence ofi WM. M. MAMOA, el. MANNING.

